assent vs fess

assent

verb
  • To agree to a proposal. 

noun
  • agreement; act of agreeing 

fess

verb
  • To confess; to admit. 

adj
  • Of animals, bad-tempered, fierce. 

  • Lively; active; strong. 

  • Proud; conceited. 

noun
  • A horizontal band across the middle of the shield. 

How often have the words assent and fess occurred in a corpus of books? (source: Google Ngram Viewer )